Conduit-making machine



April 21,1925. 1,534,825

J. J. ALLISON CONDUIT MAKING MACHINE Filed March 31, 1925 3 Sheets- Sheet 1 "if-wail.

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April 21', 1925.

Filed March 31, 1923 3 Sheets-Sheet 2 April 21, 1925..

J. J. ALLISON CONDUIT MAKING MACHINE Filed March 31, 1923 Z Sheets-Sheet 5 Patented Apr. 21, 1925.

umrse liiiilieatidh mew Karen" 31-,

ToaZZwhom iflmay oomem": I 1

Be it known that I, JOHN Jr Anni'son, a":- citizen of the-1 United Statesfresidin g at Smethport, in the coimty of McKeamand Stlate" 02f Pennsylvania-, have invented new and usefiil Improvements in 1 Gon'duit Ma-k ing-Machines, of which the following-is specification; 1 m

The invention is designed to improve the 1 action of l conduit making inachin'es sothat the trimming of the end of the con'dnitniay' be accomp l ished coincidentally with the forming ofthe material: In cari'ying out the inventionth'e' material 'isextru'ded in th'e usu al manner-and as it is extriide'dthe inner edge of the en'd is"bevelledin the-"usual man ner 01f condnits sothat when' a' len' th snfii cient for a length ofmondtiit een ex trud'ed i it may beswefed and-the end so trimmed will be complete: I

Theiinvention is illustrated in thefia'ccbin panyingfidrawings'a's follows- 1 v Fig. 1 shows: a sid'e 'elevatiom of the ma chine: 7 a

Fig. 2a plan view of the die plate. Fig. 3 a plan view of the yielding plat form; V

Etigi 4 a section on the line 'M- in Fi Figz- 5 an enlarged view ofithe m'o'nn ingtor the trimmer. I 1

1 Lmarks' the I steam oylinder, v2 the I valve contmllingthe st'eanri cylinder; 3 the :operat-- ing lever, 4 a head "on whi'eh :the steam 'cylinderis mounted; 5 posts carrying the head- 4, 6- avpiston rod 'extendi'ng' from the steam cylinder, *7 a rplunger'on the piston rod, 8"a mud chamber, 9- the die head ot''tl1'e"* nud' chamber, fll shoulderson the"posts 5 on which the head 9 rests,11the mud assages;- 12- the die plate-secured to the =head 9' and having the die openings 13 ext'endingifrotn the passages11, 14 the d'ie'coies holding the dies 15, 15 a frame carrying the die c'oies 14, 15 pests carrying the flame, 16 adjusting plates for adjusting "thefflowf-fi om' the diesi These partsar'e or may'be ofnsmul' construction? some of the plates; :pa rtiona la'rl'y theadjtisting platesfornl the subject matter of a companion application #629,065; 9 A platform 17 is ar-rfzinged in alineine'iit with the die openings 13andrec'eives theextruded" material inthe "usual manner. shown there are four diesend rovision for rece'iving' four' tubeswith each 1 operation The latfdrm' =17 is mounted on-itlie posts" 18w'vjhi' h extend td a head '1-9 carried by a phinger20'.

1923 seriamw. 629,062.

Thehead 19 :is'-gi1idedby the) posts 5rlandiis x balanced throngh a cable. 19. 'ektendingf. through the bloo'ks' 19 over? the ulleys 192i; ontheslr'aft' 19 to theweights19 lt -wi'll benbted thatth'e pulleys 19 atthe -two-side' i of the DTQChlIlQ are locked "on! theshaft? 19 so as to tend {to keep: these parts in fiardlel, a Guide plates 21 are arranged on the plat 'i form 17 in position to receive the endsi-"ofith fls extruded material as indicated by A? The; platform =has {extension Flip? 22 extending 1" outwardly from the guide plates 21-. "i'the the material received in this socket Y and in positionit is trimmed by a *Wiifi cutter "231$ This' wire cutteris securedat thn lower ens; on a hook 245- and at the uppefiieiid 011* a' hooks 25; The "hook-2 5- is cariied by a screw :26" which may befiadflusted lay niit27; The nuti 27 is oarried -by a post-28-seci1red on a slid-i ingeba-r 29 by. a set screw 30; Th'e lllOOk 24 is-alsosecured" on this bar: The wireg a will 'he" seen, is given an' inclin-ati'on and" will tringtheend of'the mhterial' to-thebevl d6 sire The moiinting and operation of the cutter is as fol-lowsi A fork- 31 is arranged on the: end of the hair 29-ra'nd as guide pul'ley:32"is= journaled in this fork andope'rates against a guidetrack33= whiel1is 'seein ed to'the uhden side of the platform? The'bar 29 -'is?sli;d ingly "mounted-' an opening 34' in a head 35." A; block--36 c-is=' seeuredzon the bar by a? screw- 37 and "guide plates 38"are arranged" at each side *ofthe "block 36 and secured to the head by a screw 39. The gIiidsSB are connected at 40' and the' bar extends thrugh this conneetion. A spiingw ll =is' arranged arohnd the tar and-between theblooli' 36ahfl the end 40 and tends to move the block-to? f wardthe head and asa result tends tot-move" the end of the baFr, carrying theipost' 28* and hook 24 0utwardlyr= in a radihl-dire'ctiori. This holds the guide "rollen =32 "against the track 33 and in consequence the bar renews? theco'ntour' of the track and tl1G C0'Ii tO1lfi0f the track I hasthe contour of the end of the tube-"as it is eiti uded from tlie'-die's. C011 seq'uentl y-* the cutter 23 follows the 'oontoiir of *the end of the tube and 'triins="'the tiibeZ' 10 Ordinarily the conduit is aboutthe form"? shown; nearly rectangiilar in shape; with-*- aslightly rounded" corner a'nd' the-" gttide as" sho'vvri' lias this form, thecntter following this fol-In and trimming; the 'tubeiv I" prefer to aocoiii'plish the"*tri'1n-1ning 'as" the platttoi'm advances so that at the com pletion of the movement of the platform the trimming is also completed. Each head is carried by a shaft 42. The shaft 42 is mounted in a bearing 43. The bearing 43 is arranged in a post 44 on the head 19. A gear 45 is fixed on the shaft 42 and meshes with a gear 46. It will be understood that each of the gears L5 mesh with a single gear 46 which is at the center of-the platform. The gear 46 is mounted on a shaft 47. The shaft 47 is carried in bearings 48 and 4-9. A beveled gear 50 is secured to the gear 46. The beveled gear 50 meshes with a beveled gear 51. The gear 51 is fixed on a shaft 52. The shaft 52 is journaled in bearings 53 on the head 19. A spool 54: is fixed on the shaft 52. A cable 55 is wound around the spool and secured at one end to the head 9 and is provided with a weight 56 at its opposite end.

It will readily be seen that as the platform .17 .is raised and lowered the cable will wind on and off the spool 54, thus rotating it-so that with the platform in its upper posi'tion and the material A extruded from the dies on the platform immediately the platform is pressed downwardly by the material as it is extruded the trimmers rotate preferably making two rotations in the downward movement so as to completely trim the end of the tube with the bevel 'or shape desired.

Upon the completion of the downward movement the tube is severed in the usual manner by a cutter (not shown).

What I claim as new is 1. In a conduit making machine, the combination of a mud chamber; a die through which the material is extruded in tubular form; a yielding platform receiving the formed material as extruded; and means trimming the end of the formed tube resting on the platform.

2. In a conduit making machine, the combination of a mud chamber; a die through Y which the material is extruded in tubular form; a yielding platform receiving the formed material as extruded; and means carried by the platform trimming the end of the formed tube resting on the platform.

3. In a conduit making machine, the combination of a mud chamber; a die through which the material is extruded in tubular form; a yielding platform receiving the formed'material as extruded; and means carried by the platform and actuated as the platform advances trimming the end of the formed tube resting on the platform.

. 4. In a conduit making machine, the combination of a mud chamber; a die through which the material is extruded in tubular form; a yielding platform receiving the formed material as extruded; and means carried by the platform and actuated as the platform advances trimming the end of the formed tube resting on the platform by the movement of the platform.

5. In a conduit making machine, the combination of a mud chamber; a plurality of dies through which the material is extruded in tubular form; a yielding platform receiving a plurality of formed tubes as extruded; and means carried by the platform trimming the end of the formed tubes resting on the platform.

6. In a conduit making machine, the combination of a mud chamber; a plurality of dies through which the material is extruded in tubular form; a yielding platform receiving a plurality of formed tubes as extruded; and means carried by the platform and actuated as the platform yields for tr1m ming the ends of the formed tubes resting on the platform.

7. In a conduit making machine, the combination of a mud chamber; a die through which the material is extruded in tubular form; a yielding platform receiving the formed material as extruded; and a rotary cutter trimming the end of the formed tune resting on the platform.

.8. In a conduit making machine, the combination of a mud chamber; a die through which the material is extruded in tubular form; a yielding platform receiving the formed material as extruded; and a rotary cutter carried by the platform trimming the end of the formed tube resting on the platform.

9. In a conduit making machine, the 00111- bination of a mud chamber; a die through which the material is extruded in tubular form; a yielding platform receiving the formed material as extruded; and a rotary cutter carried by the platform and actuated as the platform yields trimming the end of the formed tube resting on the platform.

10. In a conduit making machine, the combination of a mud chamber; a die through which the material is extruded in tubular form; a yielding platform receiving the formed material as extruded; a rotary cutter trimming the end of the formed tube resting on the platform; and a guide on the platform controlling the path of the. cutter.

11. In a conduit making machine, the combination of a mud chamber; a die through which the material is extruded in tubular form; a yielding platform receiving the formed material as extruded; a rotary cutter trimming the end of the formed tube resting on the platform; a radially movable mounting for the cutter; and a guide controlling the path of the cutter.

12. In a conduit making machine, the combination of a mud chamber; a die through which the material is extruded in tubular form; a yielding platform receiving the formed material as extruded; a rotary cutter trimming the end of the formed tube resting on the platform; a radially movable mounting for the cutter; a spring yieldingly moving the cutter in one direction; and a guide track against which the cutter is moved by the spring.

13. In a conduit making machine, the combination of a mud chamber; a die through which the material is extruded in tubular form; a yielding platform receiving the formed material as extruded; a rotary cutter trimming the end of the formed tube resting on the platform; a radially movable bar on which the cutter is mounted; a head in which the bar is mounted; a shaft carrying the head; a guide carried by the head; a spring acting on the bar; and a guide track against which the bar is pressed.

14. In a conduit making machine, the combination of a mud chamber; a die through which the material is extruded in tubular form; a yielding platform receiving the formed material as extruded; a rotary cutter trimming the end of the formed tube resting on the platform; and a driving connection carried by the platform for the out ter comprising a spool, and a cable wound on the spool, said cable having its ends stationar 15. In a conduit making machine, the combination of a mud chamber; a die through which the material is extruded in tubular form; a yielding platform receiving the formed material as extruded; a rotary cutter trimming the end of the formed tube resting on the platform; and a driving connection carried by the platform for the cutter comprising a spool, and a cable wound on the spool, said cable having its ends stationary and the lower end weighted.

16. In a conduit making machine, the combination of a mud chamber; dies through which the material is extruded from the mud chamber; a yielding platform having a plurality of faces receiving the material as it is extruded; a plurality of rotary cutters mounted on the platform and trimming the end of the material as the platform advances; mountings for the cutters; gears on the mountings; a central gear driving the plurality of mountings; and a driving means for the central gear.

17. In a conduit making machine, the combination of a mud chamber; dies through which the material is extruded from the mud chamber; a yielding platform having a plurality of faces receiving the ma terial as it is extruded; a plurality of rotary cutters mounted on the platform and trimming the end of the material as the.

platform advances; mountings for the cut- I my hand.

JOHN J. ALLISON. 

